The is Glacier Bay National Park located in the Alaska panhandle west of Juneau. It is a magnificent park, and is such a wonderful sight to see. If you are looking for a nice place to go to take a vacation at try the Glacier Bay National Park.
Yellowstone National Park, located primarily in Wyoming (though it extends to Idaho and Montana) is bigger than Glacier National Park in Montana. Yellowstone National Park is approx. 3,472 square miles. Glacier National Park is approx. 1,600 square miles.